Thames Water has selected the team to install permanent covers over all 16 primary settlement tanks – notoriously the most odorous part of Beckton Sewage Works in east London.
Odour-control units that scrub clean outgoing air to remove odour will also be installed at the site.
Work on the site , which cover an area the size of 10 football pitches, will start in March 2011 and is due for completion in 2015.
Steve Shine, Thames Water’s Chief Operating Officer, said: “This project will reduce odour emissions by around 70 per cent by 2015, making a substantial difference to local residents.
“As well as covering the settlement tanks at Beckton, we are going to install special odour-eater machines to gobble up the smelly air which sometimes comes off them.
“We have earmarked more than £350m to improve Beckton over the next five years in order to serve the future needs of London and deliver significant environmental benefits.”
In March 2010, Thames Water started work on a separate four-year scheme at Beckton Sewage Works, to help clean up the River Thames.
The major upgrade will enable the site to treat 60% more sewage than it does now, so it can better cope with heavy rainfall, helping to prevent the sewage works being overloaded and discharging into the river.
Currently, when the site becomes overloaded, partially treated sewage is discharged into the River Thames as there is no where else for it to go. This work will be completed in 2014.